Frontend Engineer — Build AI-Enhanced Collaborative Apps

Triwill Group; Ireland; On-site; EUR 80,000 - 110,000; Full time

Job summary

ActAI is seeking a Web Frontend Engineer to build core web experiences across Chat, Notes, Calendar, Docs and Sheets. You will own interactive surfaces from architecture to production and work with product, design, backend and AI engineers to embed AI into everyday workflows.

You will focus on real-time messaging, collaborative editing, and high-performance frontend across browsers and devices, delivering fast, reliable experiences.

Qualifications

• Proven experience building production web apps using React, TypeScript, and modern frontend tech.
• Strong understanding of frontend architecture, state management, and performance optimization.
• Experience with real-time systems, WebSockets, streaming APIs, or collaborative interfaces.

Responsibilities

• Build major web experiences across Chat, Notes, Calendar, Docs and Sheets.
• Develop complex interactions including real-time messaging and collaborative editing.
• Create reusable frontend architecture and components used across ActAI applications.
• Integrate streaming AI responses and model-driven experiences into product workflows.

Skills

React

TypeScript

Frontend architecture

WebSockets

Real-time collaboration

UI/UX judgment

Independent ownership

Tools

TypeScript

React.js / Next.js

HTML / CSS

WebSockets

Node.js

REST / GraphQL APIs

Job description

ActAI is seeking a Web Frontend Engineer to build core web experiences across Chat, Notes, Calendar, Docs and Sheets. You will own interactive surfaces from architecture to production and work with product, design, backend and AI engineers to embed AI into everyday workflows.

You will focus on real-time messaging, collaborative editing, and high-performance frontend across browsers and devices, delivering fast, reliable experiences.